nefunkční php mailer

$emailBody = 'Odesláno '.date('d.m.Y v H:i');
    
    $emailBody = iconv($CFG['SITE_ENCODING'], $CFG['MAIL_CHARSET'], $emailBody);
    
    $mail = new PHPMailer();
    
    //$mail->IsSMTP();
    $mail->IsHTML(false);
    //$mail->Host = $CFG['MAIL_SMTP_SERVER'];
    $mail->CharSet = $CFG['MAIL_CHARSET'];
    $mail->FromName = $CFG['MAIL_FROM_NAME'];
    $mail->From = $CFG['MAIL_FROM_ADDRESS'];
    
    $mail->AddAddress($CFG['MAIL_RECIPIENT']);
    $mail->Subject = ('Zprava');
    $mail->Body = $emailBody;

    if ($mail->Send()) {
      header('location: '.$CFG['SITE_URL'].'/index.php?result=ok');
      exit;
    } else {
      echo $mail->ErrorInfo;
      //header('location: '.$CFG['SITE_URL'].'/index.php?result=err');
      //exit;
    }

require_once('include/class.phpmailer.php');
require_once('include/class.smtp.php');